User's Manual

1.3. The Rear Panel
1. MIDI Out KeyLab Essential's MIDI Out socket can be used to send MIDI
information to outboard synths & modules when powered with the optional PSU,
rather than via USB.
2. Sustain Pedal Input The sustain pedal input automatically detects the polarity of
your sustain pedal when KeyLab Essential is turned on, so it can be used with
practically any standard pedal.
3. USB Connection Use this socket to connect KeyLab Essential to your device. This
port provides both power, MIDI data, and control information.
4. Power Socket If you wish to use KeyLab Essential in standalone mode using the
MIDI Out socket, you can connect the optional 9v DC 500mA PSU here.
Arturia - User Manual KeyLab Essential - Getting Started 3